Request an identifier prefix
This form is intended for a database or identifier service provider to register an identifier prefix meant to be recognized by the meta-resolvers at and If you are an end user, please tell your service provider about this form.

When your registration is verified, a unique prefix will be set aside exclusively for your resource (database or identifier service). We will list you (or the person you represent), as "prefix maintainer", and you will be notified if there are issues with the resolution.

You can browse the current registry at and it can be downloaded from The terms and concepts mentioned below are described at If you have questions about this form, or changes to make, please send email to

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